>I had to greatly limit harsh foods (acidic stuff like vinegar, or very salty foods) or else I'd get gastritis extremely quickly (confirmed on endoscopy). My scalp started to itch and lots of hair fell out in my crown area. I am better with dairy nowadays but still can't have sugar, and vinegar just destroys me (I guess because it is corrosive AND high in histamines). I also can barely eat acidic foods and have to avoid most of them.

This is interesting, considering that acidic and salty environments are the ones which naturally harbor beneficial bacteria and yeasts. Quite the paradox you have!